Brother International MFC 8500 Service Manual - Page 97
Inner Insulation Film, High-voltage Power Supply PCB, Engine PCB, and 2nd Cassette Relay PCB*
UPC - 012502603832
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1.23 Inner Insulation Film, High-voltage Power Supply PCB, Engine PCB, and 2nd Cassette Relay PCB* (*Provided on models available with a 2nd paper cassette) (1) Remove screw "a" and take off the inner insulation film. (2) Remove three screws (two "b" and one "c") from the high-voltage power supply PCB and engine PCB. (3) Slightly lift up the high-voltage power supply PCB and disconnect it from the engine PCB. (4) Pull the spring up and out. (5) Slightly hold up the engine PCB and disconnect the following harnesses: • Toner sensor (light-receiver) harness (3-pin, P1) • Main-LV-engine harness (2-pin, P15) • 2nd cassette relay harness* (8-pin, P8) • Heater thermistor harness (2-pin, P6), if the heat-fixing unit has not been removed • Fan harness (2-pin, P7), if the fan has not been removed • Toner sensor (LED) harness (4-pin, P10) • Main motor harness (6-pin, P9) • Polygon motor harness (5-pin, P12) • Solenoid harness (2-pin, P13) "a," "b," and "c": Taptite, bind B M4x12 IV - 56